EP2632237B1 - Wiring substrate - Google Patents
Wiring substrate Download PDFInfo
- Publication number
- EP2632237B1 EP2632237B1 EP12817081.8A EP12817081A EP2632237B1 EP 2632237 B1 EP2632237 B1 EP 2632237B1 EP 12817081 A EP12817081 A EP 12817081A EP 2632237 B1 EP2632237 B1 EP 2632237B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection terminals
- wiring substrate
- filling member
- layer
- solder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000758 substrate Substances 0.000 title claims description 181
- 238000007747 plating Methods 0.000 claims description 112
- 229910000679 solder Inorganic materials 0.000 claims description 109
- 229910052751 metal Inorganic materials 0.000 claims description 83
- 239000002184 metal Substances 0.000 claims description 82
- 238000009413 insulation Methods 0.000 claims description 43
- 238000000926 separation method Methods 0.000 claims description 29
- 239000010410 layer Substances 0.000 description 272
- 229920005989 resin Polymers 0.000 description 79
- 239000011347 resin Substances 0.000 description 79
- 238000000034 method Methods 0.000 description 65
- 239000004065 semiconductor Substances 0.000 description 40
- 230000008569 process Effects 0.000 description 35
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 28
- 239000010949 copper Substances 0.000 description 28
- 229910052802 copper Inorganic materials 0.000 description 27
- 238000004519 manufacturing process Methods 0.000 description 23
- 239000004020 conductor Substances 0.000 description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 18
- 238000000576 coating method Methods 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 10
- 239000007822 coupling agent Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 239000002344 surface layer Substances 0.000 description 7
- 229920001187 thermosetting polymer Polymers 0.000 description 7
- 229910052718 tin Inorganic materials 0.000 description 7
- 239000011651 chromium Substances 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 6
- 229920000647 polyepoxide Polymers 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 238000005429 filling process Methods 0.000 description 5
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000011342 resin composition Substances 0.000 description 4
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 239000003755 preservative agent Substances 0.000 description 3
- 230000002335 preservative effect Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001151 other effect Effects 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- 229910020836 Sn-Ag Inorganic materials 0.000 description 1
- 229910020888 Sn-Cu Inorganic materials 0.000 description 1
- 229910020935 Sn-Sb Inorganic materials 0.000 description 1
- 229910020988 Sn—Ag Inorganic materials 0.000 description 1
- 229910019204 Sn—Cu Inorganic materials 0.000 description 1
- 229910008757 Sn—Sb Inorganic materials 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 150000008040 ionic compounds Chemical class 0.000 description 1
- 239000013212 metal-organic material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49811—Additional leads joined to the metallisation on the insulating substrate, e.g. pins, bumps, wires, flat leads
- H01L23/49816—Spherical bumps on the substrate for external connection, e.g. ball grid arrays [BGA]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49822—Multilayer substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49827—Via connections through the substrates, e.g. pins going through the substrate, coaxial cables
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/111—Pads for surface mounting, e.g. lay-out
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3452—Solder masks
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4007—Surface contacts, e.g. bumps
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/12—Mountings, e.g. non-detachable insulating substrates
- H01L23/14—Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
- H01L23/145—Organic substrates, e.g. plastic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49866—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers characterised by the materials
- H01L23/49894—Materials of the insulating layers or coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0183—Dielectric layers
- H05K2201/0195—Dielectric or adhesive layers comprising a plurality of layers, e.g. in a multilayer structure
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09881—Coating only between conductors, i.e. flush with the conductors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/099—Coating over pads, e.g. solder resist partly over pads
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09918—Optically detected marks used for aligning tool relative to the PCB, e.g. for mounting of components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3436—Leadless components having an array of bottom contacts, e.g. pad grid array or ball grid array components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4661—Adding a circuit layer by direct wet plating, e.g. electroless plating; insulating materials adapted therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a wiring substrate having a plurality of connection terminals formed on its main surface for connection to a semiconductor chip.
- a generic wiring substrate having the features defined in the preamble of claim 1, is known from US 2011/147057 A1 .
- connection terminals formed on its main surface (front surface) for connection to a semiconductor chip (hereinafter referred to as connection terminals).
- connection terminals terminals formed on its main surface (front surface) for connection to a semiconductor chip (hereinafter referred to as connection terminals).
- connection terminals the disposition density of the connection terminals has been increasing; accordingly, the pitch between the connection terminals to be disposed has become finer.
- NSMD non solder mask defined
- connection terminals in the case where a plurality of connection terminals are disposed at a fine pitch within the same opening, solder coated on the surface of a certain connection terminal may flow to an adjacent connection terminal, potentially resulting in the occurrence of a short circuit between the connection terminals.
- insulating partition walls are provided between connection terminals (refer to, for example, Patent Document 1).
- Patent Document 1 Japanese Patent Application Laid-Open ( kokai ) No. 2009-212228
- solder When solder is coated on the connection terminals, solder assumes a spherical shape (ball shape) by the effect of surface tension; in the case of the wiring substrate described in Patent Document 1, since solder is coated on the upper surfaces and side surfaces of the connection terminals, solder coated on the connection terminals has a large diameter. Accordingly, pitch spacings between the connection terminals must be wide; thus, difficulty is encountered in implementing a finer-pitch disposition of the connection terminals.
- connection terminals are bonded only at their lower surfaces to the ground resin.
- the connection terminals are small in size.
- the present invention has been conceived to cope with the above circumstances, and an object of the invention is to provide a wiring substrate configured to prevent the occurrence of a short circuit between the connection terminals and to implement a fine-pitch disposition of the connection terminals.
- a wiring substrate comprising a laminate of one or more insulation layers and one or more conductive layers, characterized by further comprising a plurality of connection terminals formed on the laminate and spaced apart from one another, each having a step formed at an outer periphery of a first main surface opposite a contact surface in contact with the laminate, and a filling member provided in a filling manner between the connection terminals.
- the filling member is provided in a filling manner between the connection terminals, at the time of connection to a semiconductor chip, there can be prevented the generation of voids in regions between the connection terminals of an underfill, an NCP (Non-Conductive Paste), or an NCF (Non-Conductive Film) applied to fill a gap between the semiconductor chip and the wiring substrate. Therefore, there can be prevented the occurrence of a short circuit between the connection terminals which could otherwise result from flow of solder into the voids during reflow. Also, since the connection terminals are reduced in the area of exposure, solder coated on the individual connection terminals does not increase in diameter, whereby the connection terminals can be disposed at a fine pitch.
- connection terminals in forming a metal plating layer on the surfaces of the connection terminals, there can be prevented plating sag in which plating is deposited also on a surface of the laminate located between the connection terminals, as well as undercut in which side surfaces of the connection terminals are etched in regions located toward the lower surfaces of the connection terminals. Furthermore, since each of the connection terminals has a step formed at the outer periphery of the first main surface opposite the contact surface in contact with the laminate, solder coated on the individual connection terminals does not increase in diameter, whereby the connection terminals can be disposed at a finer pitch.
- the filling member can be brought in contact with at least a portion of side surfaces of each of the connection terminals.
- the filling member By means of the filling member being brought in contact with at least a portion of the side surfaces of each of the connection terminals, there can be prevented a state in which the connection terminals are bonded only at their lower surfaces to the ground resin. Therefore, the connection terminals are improved in bonding strength, thereby restraining potential separation of the connection terminals in the course of manufacture.
- connection terminals can be roughened at at least a portion of the contact surface in contact with the filling member.
- bonding strength between the connection terminals and the filling member is improved. Therefore, the connection terminals are improved in bonding strength, thereby restraining potential separation of the connection terminals in the course of manufacture.
- the filling member may function as solder resist.
- solder resist By virtue of the filling member functioning as solder resist, there can be restrained the occurrence of a short circuit between the connection terminals which could otherwise result from solder remaining on the filling member.
- the laminate is covered with a solder resist layer having an opening from which the connection terminals are exposed, and covering a wiring pattern connected to the connection terminals.
- the wiring pattern being covered with the solder resist layer, which is an insulation member, the occurrence of a short circuit of the wiring pattern can be prevented.
- the present invention can provide a wiring substrate configured to prevent the occurrence of a short circuit between the connection terminals and to implement a fine-pitch disposition of the connection terminals.
- FIG. 1 is a plan view (front side) of a wiring substrate 100 according to a first arrangement.
- FIG. 2 is a fragmentary, sectional view of the wiring substrate 100 taken along line I-I of FIG. 1 .
- FIG. 3 is a pair of configurational views of connection terminals T1 formed on the front side of the wiring substrate 100.
- FIG. 3(a) is a top view of the connection terminals T1.
- FIG. 3(b) is a sectional view taken along line II-II of FIG. 3(a) .
- a side of the wiring substrate 100 on which a semiconductor chip is connected is referred to as the front side
- a side on which a motherboard, a socket, or the like (hereinafter, referred to as a motherboard or the like) is connected is referred to as the back side.
- the wiring substrate 100 shown in FIGS. 1 to 3 includes a core substrate 2; a build-up layer 3 (front side) on which a plurality of the connection terminals T1 are formed for connection to a semiconductor chip (not shown) and which is laminated on the front side of the core substrate 2; a filling member 4 laminated on the build-up layer 3 and provided in a filling manner between the connection terminals T1; a solder resist layer 5 laminated on the filling member 4 and having openings 5a from which at least a portion of each of the connection terminals T1 is exposed; a build-up layer 13 (back side) on which a plurality of connection terminals T11 are formed for connection to a mother board or the like (not shown) and which is laminated on the back side of the core substrate 2; and a solder resist layer 14 laminated on the build-up layer 13 and having openings 14a from which at least a portion of each of the respective connection terminals T11 is exposed.
- the core substrate 2 is a platelike resin substrate formed of a heat-resistant resin plate (e.g., a bismaleimide-triazine resin plate), a fiber-reinforced resin plate (e.g., a glass-fiber-reinforced epoxy resin), or the like.
- Core conductive-layers 21 and 22, which form metal wirings L1 and L11, are formed on the front surface and the back surface, respectively, of the core substrate 2.
- the core substrate 2 has through-holes 23 formed by drilling or the like; a through-hole conductor 24 is formed on the inner wall surface of each of the through-holes 23 for establishing electrical communication between the core conductive-layers 21 and 22. Furthermore, the through-holes 23 are filled with a resin filler 25 such as epoxy resin or the like.
- the build-up layer 3 is composed of resin insulation layers 31 and 33 and conductive layers 32 and 34 laminated on the front side of the core substrate 2.
- the resin insulation layer 31 is formed from a thermosetting resin composition, and the conductive layer 32, which forms metal wiring L2, is formed on the front surface of the resin insulation layer 31.
- the resin insulation layer 31 has vias 35 for electrically connecting a core conductive-layer 21 and the conductive layer 32.
- the resin insulation layer 33 is formed from a thermosetting resin composition, and the conductive layer 34 having a plurality of the connection terminals T1 is formed on the surface of the resin insulation layer 33.
- the resin insulation layer 33 has vias 36 for electrically connecting the conductive layer 32 and the conductive layer 34.
- the resin insulation layers 31 and 33 and the conductive layer 32 constitute a laminate.
- Each of the vias 35 and 36 has a via hole 37a, and a via conductor 37b provided on the inner circumferential surface of the via hole 37a; a via pad 37c provided in such a manner as to electrically communicate with the via conductor 37b at its bottom; and a via land 37d projecting outward from an opening edge of the via conductor 37b on a side opposite the via pad 37c.
- connection terminals T1 are used for connection to a semiconductor chip.
- the connection terminals T1 are of a so-called peripheral type and are disposed along the inner periphery of a semiconductor chip mounting region.
- the semiconductor chip is electrically connected to the connection terminals T1, thereby being mounted on the wiring substrate 100.
- the connection terminals T1 are roughened at their surfaces.
- connection terminals T1 are not roughened at their surfaces, adhesion to the filling member 4, which will be described later, can be improved by the following method: after the connection terminals T1 are coated at their surfaces with any one metal element selected from among Sn (tin), Ti (titanium), Cr (chromium), and Ni (nickel) to thereby form a metal layer, the metal layer surface is treated with a coupling agent.
- the coupling agent improves adhesion mainly of metal and inorganic materials to organic materials, such as resin.
- a coupling agent include a silane coupling agent, a titanate coupling agent, and an aluminate coupling agent; however, use of a silane coupling agent is preferred.
- silane coupling agent include aminosilane, epoxysilane, and styrenesilane.
- connection terminals T1 has a step L formed at the outer periphery of a first main surface F opposite a contact surface in contact with the resin insulation layer 33 of the build-up layer 3, and the exposed surface of the connection terminal T1 including the step L is covered with a metal plating layer M.
- solder coated on the connection terminals of the semiconductor chip is reflowed, thereby electrically connecting the connection terminals of the semiconductor chip and the corresponding connection terminals T1.
- the metal plating layer M is composed of, for example, a single metal layer or a plurality of metal layers selected from among an Ni layer, an Sn layer, an Ag layer, a Pd layer, an Au layer, etc.
- solder may be coated on the exposed surfaces of the connection terminals T1 including the steps L; furthermore, after the exposed surfaces of the connection terminals T1 including the steps L are covered with the metal plating layer M, the metal plating layer M may be coated with solder. A method of coating solder on the exposed surfaces of the connection terminals T1 will be described later.
- the filling member 4 is an insulating member laminated on the build-up layer 3, and the material of the filling member 4 is preferably the same as that of the solder resist layer 5.
- the filling member 4 is provided in a filling manner between the connection terminals T1 in a state of adhesion to the side surfaces of the connection terminals T1 formed on the surface of the build-up layer 3.
- the thickness D1 of the filling member 4 is smaller than the thickness (height) D2 of the connection terminals T1.
- the solder resist layer 5 covers the wiring pattern connected to the connection terminals T1 and has the openings 5a from which are exposed the connection terminals T1 disposed along the inner periphery of a mounting region for a semiconductor chip.
- the openings 5a of the solder resist layer 5 are of the NSMD type such that a plurality of the connection terminals T1 are disposed within the same opening 5a.
- the build-up layer 13 is composed of resin insulation layers 131 and 133 and conductive layers 132 and 134 laminated on the back side of the core substrate 2.
- the resin insulation layer 131 is formed from a thermosetting resin composition, and the conductive layer 132, which forms metal wiring L12, is formed on the back surface of the resin insulation layer 131.
- the resin insulation layer 131 has vias 135 for electrically connecting a core conductive-layer 22 and the conductive layer 132.
- the resin insulation layer 133 is formed from a thermosetting resin composition, and the conductive layer 134 having one or more connection terminals T11 is formed on the surface of the resin insulation layer 133. Vias 136 for electrically connecting the conductive layer 132 and the conductive layer 134 are formed in the resin insulation layer 133.
- Each of the vias 135 and 136 has a via hole 137a, and a via conductor 137b provided on the inner circumferential surface of the via hole 137a; a via pad 137c provided in such a manner as to electrically communicate with the via conductor 137b at its bottom; and a via land 137d projecting outward from an opening edge of the via conductor 137b on a side opposite the via pad 137c.
- connection terminals T11 are utilized as back-surface lands (PGA pads and BGA pads) for connecting the wiring substrate 100 to a motherboard or the like; are formed in an outer peripheral region; i.e., a region excluding a substantially central region, of the wiring substrate 100; and are disposed in such a rectangular array as to surround the substantially central region. Also, at least a portion of the surface of each of the connection terminals T11 is covered with the metal plating layer M.
- the solder resist layer 14 is formed by laminating a solder resist film on the surface of the build-up layer 13.
- the solder resist layer 14 has openings 14a for partially exposing the surfaces of the connection terminals T11.
- the connection terminals T11 are in such a state that their surfaces are partially exposed from the solder resist layer 14 through the respective openings 14a. That is, the openings 14a of the solder resist layer 14 are of the SMD type such that the surfaces of the connection terminals T11 are exposed partially.
- the openings 14a of the solder resist layer 14 are formed individually for the connection terminals T11.
- Solder balls B are formed from solder which contains substantially no lead, such as Sn-Ag, Sn-Cu, Sn-Ag-Cu, or Sn-Sb, in the respective openings 14a in such a manner as to be electrically connected to the respective connection terminals T11 via the metal plating layer M.
- solder balls B of the wiring substrate 100 are reflowed, thereby electrically connecting the connection terminals T11 to corresponding connection terminals of the motherboard or the like.
- FIGS. 4 to 11 show processes in manufacturing the wiring substrate 100 according to the first arrangement. A method of manufacturing the wiring substrate 100 will next be described with reference to FIGS. 4 to 11 .
- a copper clad laminate configured such that a platelike resin substrate has copper foils affixed to its front and back surfaces, respectively.
- Through-holes which are to become the through-holes 23 are drilled in the copper clad laminate at predetermined positions.
- the copper clad laminate is subjected to electroless copper plating and copper electroplating, thereby forming the through-hole conductors 24 on the inner walls of the through-holes 23, and copper plating layers on the opposite sides of the copper clad laminate (see FIG. 4(a) ).
- the through-hole conductors 24 are filled with the resin filler 25, such as epoxy resin. Furthermore, copper platings formed on the respective copper foils on the opposite sides of the copper clad laminate are etched to desired patterns so as to form the core conductive-layers 21 and 22, which form the respective metal wirings L1 and L11, on the front and back surfaces, respectively, of the copper clad laminate, thereby yielding the core substrate 2 (see FIG. 4(b) ). Desirably, after the step of forming the through-holes 23, a desmearing process is performed for eliminating smear from processed portions.
- Insulating resin films which contain an epoxy resin as a main component and are to become the resin insulation layers 31 and 131 are overlaied on the front and back surfaces, respectively, of the core substrate 2.
- the resultant laminate is subjected to pressure and heat by use of a vacuum thermocompression press, thereby pressure bonding the insulating resin films to the core substrate 2 while the insulating resin films are heat-cured.
- the via holes 37a and 137a are formed in the resin insulation layers 31 and 131, respectively, through laser irradiation by use of a conventionally known laser machining apparatus (see FIG. 5(a) ).
- electroless copper plating is performed, thereby forming electroless copper plating layers on the resin insulation layers 31 and 131, respectively, and on the inner walls of the via holes 37a and 137a.
- photoresist is laminated on the electroless copper plating layers formed respectively on the resin insulation layers 31 and 131, followed by exposure and development to form plating resists in desired patterns.
- the plating resists being used as masks, copper electroplating is performed, thereby yielding copper platings in desired patterns.
- the plating resists are removed, and then the electroless copper plating layers which underlie the plating resists are removed, thereby forming the conductive layers 32 and 132, which form the respective metal wirings L2 and L12.
- the vias 35 and 135 composed of the via conductors 37b and 137b, the via pads 37c and 137c, and the via lands 37d and 137d, respectively, are also formed (see FIG. 5(b) ).
- insulating resin films which contain an epoxy resin as a main component and are to become the resin insulation layers 33 and 133 are overlaied on the conductive layers 32 and 132, respectively.
- the resultant laminate is subjected to pressure and heat by use of a vacuum thermocompression press, thereby pressure bonding the insulating resin films to the conductive layers 32 and 132 while the insulating resin films are heat-cured.
- the via holes 37a and 137a are formed in the resin insulation layers 33 and 133, respectively, through laser irradiation by use of a conventionally known laser machining apparatus (see FIG. 6(a) ).
- the conductive layers 34 and 134 having the connection terminals T1 and T11, respectively, and the vias 36 and 136 are formed respectively on the resin insulation layers 33 and 133 in which the via holes 37a and 137a are formed respectively (see FIG. 6(b) ).
- the filling member 4 is provided in a filling manner between the connection terminals T1, which form a surface layer of the build-up layer 3, up to a level lower than the connection terminals T1.
- the surfaces (particularly, side surfaces) of the connection terminals T1 are roughened.
- the surfaces of the connection terminals T1 can be roughened, for example, by treatment with an etchant, such as MEC ETCH BOND (a product of MEC Co. Ltd.).
- connection terminals T1 instead of roughening the surfaces of the connection terminals T1, the following process may be employed for improving adhesion to the filling member 4: after the connection terminals T1 are coated at their surfaces with any one metal element selected from among Sn (tin), Ti (titanium), Cr (chromium), and Ni (nickel) to thereby form a metal layer, the metal layer surface is treated with a coupling agent.
- any one metal element selected from among Sn (tin), Ti (titanium), Cr (chromium), and Ni (nickel) to thereby form a metal layer, the metal layer surface is treated with a coupling agent.
- an insulating resin which is to become the filling member 4 can be coated by various methods, such as printing, laminating, roll coating, and spin coating.
- the first filling method after a thermosetting, insulating resin is thinly coated on the surface of the build-up layer 3 having the connection terminals T1 formed at a surface layer and is then heat-cured, the cured insulating resin is ground until it becomes lower in level than the connection terminals T1, thereby providing the filling member 4 in a filling manner between the connection terminals T1.
- the second filling method after a thermosetting, insulating resin is thinly coated on the surface of the build-up layer 3 having the connection terminals T1 formed at a surface layer, excess insulating resin which covers the upper surfaces of the connection terminals T1 is removed by means of a solvent which dissolves the insulating resin; then, heat-curing is performed, thereby providing the filling member 4 in a filling manner between the connection terminals T1.
- the third filling method after a thermosetting, insulating resin is thickly coated on the surface of the build-up layer 3 having the connection terminals T1 formed at a surface layer and is then heat-cured, a region other than a semiconductor device mounting region is masked, the cured insulating resin is dry-etched by RIE (Reactive Ion Etching) or the like until it becomes lower in level than the connection terminals T1, thereby providing the filling member 4 in a filling manner between the connection terminals T1.
- RIE Reactive Ion Etching
- FIG. 8 is a set of explanatory views for explaining the fourth filling method.
- the fourth filling method is described below with reference to FIG. 8 .
- the coated insulating resin is subjected to exposure and development while regions which are to become the openings 5a of the solder resist layer are masked, thereby photo-curing the coated insulating resin in a region which is to become the outer region around the openings 5a (see FIG. 8(b) ).
- the intermediate product of the wiring substrate 100 is immersed in an aqueous solution of sodium carbonate (concentration 1 wt.%) for a short period of time (to such an extent that the surface of the insulating resin in an unexposed region slightly swells)(see FIG. 8(c) ).
- the swelled insulating resin is emulsified by washing in water ( FIG. 8(d) ).
- the swelled, emulsified insulating resin is removed from the intermediate product of the wiring substrate 100 (see FIG. 8(e) ).
- the above-mentioned immersion and washing in water are repeated once or a plurality of times until the insulating resin which is not photo-cured becomes lower in level than the wiring conductors T1. Subsequently, the insulating resin is cured by means of heat or ultraviolet rays.
- the filling member 4 and the solder resist layer 5 are integrally formed.
- solder resist films are press-laminated respectively on the filling member 4 and the build-up layer 13.
- the laminated solder resist films are subjected to exposure and development, thereby forming the solder resist layer 5 having the NSMD-type openings 5a for exposing the end surfaces and side surfaces of the connection terminals T1, and the solder resist layer 14 having the SMD-type openings 14a for partially exposing the surfaces of the connection terminals T11.
- the filling member 4 and the solder resist layer 5 are integrally formed; thus, the solder resist layer process does not require a step of laminating the solder resist layer 5.
- the exposed surfaces of the connection terminals T1 are subjected to etching by sodium persulfate or the like to remove impurities, such as an oxide film, from the surfaces of the connection terminals T1 and to form the step L at the periphery of the main surface F of each of the connection terminals T1.
- the metal plating layer M is formed on the exposed surfaces of the connection terminals T1 and T11 by electroless reduction plating which uses a reducing agent.
- the metal plating layer M is formed through displacement of metal of the exposed surfaces of the connection terminals T1.
- the step L is formed at the periphery of the main surface F of each of the connection terminals T1.
- connection terminals T1 In coating solder on the exposed surfaces of the connection terminals T1, the following two methods are available according to the thickness of a solder layer to be formed by coating.
- the exposed surfaces of the connection terminals T1 are slightly etched (soft etching) so as to remove an oxide film from the exposed surfaces of the connection terminals T1.
- the step L is formed at the periphery of the main surface F of each of the connection terminals T1.
- a paste of mixture of an Sn (tin) powder, an ionic compound containing metal, such as Ag (silver) and Cu (copper), and flux (e.g., SUPER SOLDER (product name) from Harima Chemicals, Inc.) is thinly applied to the entire inner regions of the SMD-type openings 14a in such a manner as to cover the entire exposed surfaces of the connection terminals T1. Subsequently, reflowing is performed, thereby forming a solder layer of an alloy of Sn and Ag or an alloy of Sn, Ag, and Cu on the exposed surfaces of the connection terminals T1.
- SUPER SOLDER product name
- the exposed surfaces of the connection terminals T1 are slightly etched (soft etching) so as to remove an oxide film from the exposed surfaces of the connection terminals T1.
- the step L is formed at the periphery of the main surface F of each of the connection terminals T1.
- electroless Sn (tin) plating is performed on the exposed surfaces of the connection terminals T1 to form an Sn plating layer, and flux is applied in such a manner as to cover the entire surface of the Sn plating layer.
- connection terminals T1 Subsequently, reflowing is performed to melt the Sn plating layer formed on the connection terminals T1, thereby forming a solder layer on the main surfaces F of the connection terminals T1. At this time, molten Sn coheres on the main surfaces F of the connection terminals T1 by the effect of surface tension.
- solder paste is applied, by solder printing, to the metal plating layer M formed on the connection terminals T11; subsequently, the applied solder paste is reflowed at a predetermined temperature for a predetermined time, thereby forming the solder balls B on the connection terminals T11.
- the wiring substrate 100 according to the first arrangement is configured such that the filling member 4 is provided in a filling manner between the connection terminals T1, there can be prevented the generation of voids in an underfill, an NCP, or an NCF in regions between the connection terminals T1. Therefore, there can be prevented the occurrence of a short circuit between the connection terminals which could otherwise result from flow of solder into the voids during reflow. Also, since the connection terminals T1 are reduced in the area of exposure, solder coated on the individual connection terminals does not increase in diameter, whereby the connection terminals T1 can be disposed at a fine pitch.
- connection terminals T1 in forming the metal plating layer M on the surfaces of the connection terminals T1, there can be prevented plating sag between the connection terminals T1, and undercut in which bottom portions of the connection terminals T1 are etched. Furthermore, since each of the connection terminals T1 has the step L formed at the outer periphery of the first main surface F opposite the contact surface in contact with the resin insulation layer 33 of the build-up layer 3, solder coated on the individual connection terminals T1 does not increase in diameter, whereby the connection terminals T1 can be disposed at a finer pitch.
- connection terminals T1 are roughened at their contact surfaces which come into contact with the filling member 4, the filling process is performed for providing the filling member 4 in a filling manner between the connection terminals T1, bonding strength between the connection terminals T1 and the filling member 4 is enhanced.
- the filling member 4 has substantially similar solder repellency as the solder resist layer 5, whereby there can be restrained the occurrence of a short circuit between the connection terminals T1 which could otherwise result from solder remaining on the filling member 4.
- the filling member 4 provided in a filling manner between the connection terminals T1 has the thickness D1 smaller than the thickness (height) D2 of the connection terminals T1. That is, the connection terminals T1 slightly project from the upper surface of the filling member 4.
- the connection terminals of the semiconductor chip come into contact with ends of the corresponding connection terminals T1; therefore, there is improved the reliability of connection between the connection terminals T1 and the connection terminals of the semiconductor chip.
- FIG. 12 is a plan view (front side) of a wiring substrate 200 according to a second arrangement.
- FIG. 13 is a fragmentary, sectional view of the wiring substrate 200 taken along line I-I of FIG. 12 .
- FIG. 14 is a pair of configurational views of connection terminals T2 formed on the front side of the wiring substrate 200.
- FIG. 14(a) is a top view of the connection terminals T2.
- FIG. 14(b) is a sectional view taken along line II-II of FIG. 3(a) .
- the configuration of the wiring substrate 200 will next be described with reference to FIGS. 12 to 14 ; however, configurational features similar to those of the wiring substrate 100 described above with reference to FIGS. 1 to 3 are denoted by like reference numerals, and repeated description thereof is omitted.
- a cover plating layer 41 electrically connected to the core conductive-layer 21 is formed, and the cover plating layer 41 and the conductive layer 32 are electrically connected through filled vias 42, whereas the conductive layer 32 and the conductive layer 34 are electrically connected through filled vias 43.
- Each of the filled vias 42 and 43 has a via hole 44a and a via conductor 44b, which fills the via hole 44a through application by plating.
- connection terminals T2 which will be described later, are formed at the front surface of the build-up layer 3 such that there are not formed a wiring pattern connected at the same layer to the connection terminals T2, and a solder resist layer which covers the wiring pattern.
- the resin insulation layers 31 and 33 and the conductive layer 32 constitute a laminate.
- connection terminals T2 formed on the front side of the wiring substrate 200 are of a so-called area bump type and are disposed over the entire mounting region for a semiconductor chip.
- the connection terminals T2 are connected to the semiconductor chip.
- the semiconductor chip is electrically connected to the connection terminals T2, thereby being mounted on the wiring substrate 200.
- the connection terminals T2 are roughened at their surfaces.
- the surfaces of the connection terminals T2 can be roughened, for example, by treatment with an etchant, such as MEC ETCH BOND (a product of MEC Co. Ltd.).
- connection terminals T2 has the step L formed at the outer periphery of the first main surface F opposite the contact surface in contact with the resin insulation layer 33 of the build-up layer 3, and the exposed surface of the connection terminal T2 including the step L is covered with the metal plating layer M.
- solder coated on the connection terminals of the semiconductor chip is reflowed, thereby electrically connecting the connection terminals of the semiconductor chip and the corresponding connection terminals T2.
- coating with solder may be employed, or an anticorrosive OSP treatment may be applied.
- the metal plating layer M is formed on the connection terminals T2 as follows: the exposed surfaces of the connection terminals T2 are subjected to etching by sodium persulfate or the like to thereby form the step L at the periphery of the main surface F of each of the connection terminals T2; subsequently, the metal plating layer M is formed on the exposed surfaces of the connection terminals T2 by electroless reduction plating which uses a reducing agent. In the case of forming the metal plating layer M on the exposed surfaces of the connection terminals T2 by electroless displacement plating, the metal plating layer M is formed through displacement of metal of the exposed surfaces of the connection terminals T2. Thus, without need to etch the exposed surfaces of the connection terminals T2 by sodium persulfate or the like, the step L is formed at the periphery of the main surface F of each of the connection terminals T2.
- the filling member 4 is provided in a filling manner between the connection terminals T2. Furthermore, the filling member 4 is provided in a filling manner between the connection terminals T2 in a state of adhesion to the side surfaces of the connection terminals T2 formed at a surface layer of the build-up layer 3, and the thickness D1 of the filling member 4 is smaller than the thickness (height) D3 of the connection terminals T2.
- the filling member 4 can be provided in a filling manner between the connection terminals T2 by any one of the first to fourth filling methods described above in the section of the first arrangement.
- a cover plating layer 141 electrically connected to the core conductive-layer 22 is formed, and the cover plating layer 141 and the conductive layer 132 are electrically connected through filled vias 142, whereas the conductive layer 132 and the conductive layer 134 are electrically connected through filled vias 143.
- Each of the filled vias 142 and 143 has a via hole 144a and a via conductor 144b, which fills the via hole 144a through application by plating.
- the wiring substrate 200 according to the second arrangement is configured such that the filling member 4 is provided in a filling manner between the connection terminals T2.
- each of the connection terminals T2 has the step L formed at the outer periphery of the first main surface F opposite the contact surface in contact with the resin insulation layer 33 of the build-up layer 3.
- the filling member 4 is in contact with the side surfaces of the connection terminals T2.
- the connection terminals T2 are roughened at their contact surfaces which come into contact with the filling member 4.
- the filling member 4 provided in a filling manner between the connection terminals T2 has the thickness D1 smaller than the thickness (height) D3 of the connection terminals T2.
- FIG. 15 is a plan view (front side) of a wiring substrate 300 according to a third arrangement.
- FIG. 16 is a fragmentary, sectional view of the wiring substrate 300 taken along line I-I of FIG. 15 .
- FIG. 17 is a pair of configurational views of connection terminals T3 formed on the front side of the wiring substrate 300.
- FIG. 17(a) is a top view of the connection terminals T3.
- FIG. 17(b) is a sectional view taken along line II-II of FIG. 17(a) .
- the wiring substrate 300 according to the third arrangement differ from the wiring substrate 200 described above with reference to FIGS. 12 to 14 in that the connection terminals T3 and T11 are formed directly on the conductive layers 32 and 132, respectively, without involvement of vias.
- the configuration of the wiring substrate 300 will next be described with reference to FIGS. 15 to 17 ; however, configurational features similar to those of the wiring substrate 100 described above with reference to FIGS. 1 to 3 and the wiring substrate 200 described above with reference to FIGS. 12 to 14 are denoted by like reference numerals, and repeated description thereof is omitted.
- the cover plating layer 41 electrically connected to the core conductive-layer 21 is formed, and the cover plating layer 41 and the conductive layer 32 are electrically connected through the filled vias 42.
- Each of the filled vias 42 has the via hole 44a and the via conductor 44b, which fills the via hole 44a through application by plating.
- connection terminals T3 formed on the conductive layer 32 of the wiring substrate 300 are disposed at substantially even intervals in a lattice array over the entire mounting region for a semiconductor chip.
- the connection terminals T3 have a columnar shape (e.g., circular column, square column, or triangular column) and are formed directly on the conductive layer 32 without involvement of vias such that their upper portions project from the surface of the filling member 4.
- the connection terminals T3 are connected to the semiconductor chip.
- the semiconductor chip is electrically connected to the connection terminals T3, thereby being mounted on the wiring substrate 300.
- the connection terminals T3 are roughened at their surfaces.
- the surfaces of the connection terminals T3 can be roughened, for example, by treatment with an etchant, such as MEC ETCH BOND (a product of MEC Co. Ltd.).
- connection terminals T3 instead of roughening the surfaces of the connection terminals T3, the following process may be employed for improving adhesion to the filling member 4: after the connection terminals T3 are coated at their surfaces with any one metal element selected from among Sn (tin), Ti (titanium), Cr (chromium), and Ni (nickel) to thereby form a metal layer, the metal layer surface is treated with a coupling agent.
- any one metal element selected from among Sn (tin), Ti (titanium), Cr (chromium), and Ni (nickel) to thereby form a metal layer
- the metal layer surface is treated with a coupling agent.
- each of the connection terminals T3 has the step L formed at the outer periphery of the first main surface F, and the exposed surface of the connection terminal T3 including the step L is covered with the metal plating layer M.
- solder coated on the connection terminals of the semiconductor chip is reflowed, thereby electrically connecting the connection terminals of the semiconductor chip and the corresponding connection terminals T3.
- the metal plating layer M is composed of, for example, a single metal layer or a plurality of metal layers selected from among an Ni layer, an Sn layer, an Ag layer, a Pd layer, an Au layer, etc. (e.g., Ni layer/Au layer or Ni layer/Pd layer/Au layer).
- an anticorrosive OSP Organic Solderability Preservative
- solder may be coated on the exposed surfaces of the connection terminals T3 including the steps L; furthermore, after the exposed surfaces of the connection terminals T3 including the steps L are covered with the metal plating layer M, the metal plating layer M may be coated with solder. Since a method of coating solder on the exposed surfaces of the connection terminals T3 has been described in the section of the first arrangement, repeated description thereof is omitted.
- the filling member 4 is provided in a filling manner between the connection terminals T3 in a state of adhesion to the side surfaces of the connection terminals T3 formed at a surface layer of the build-up layer 3.
- the thickness D1 of the filling member 4 is smaller than the thickness (height) D4 of the connection terminals T3.
- the filling member 4 can be provided in a filling manner between the connection terminals T3 by any one of the first to fourth filling methods described above in the section of the first arrangement.
- the solder resist layer 5 covers the front side of a wiring pattern connected to the connection terminals T3 and has an opening 5b from which are exposed the connection terminals T3 disposed at substantially even intervals in a mounting region for a semiconductor chip, and openings 5c from which chip capacitor mounting pads P are exposed respectively.
- the opening 5b of the solder resist layer 5 is of the NSMD type such that a plurality of the connection terminals T3 are disposed within the same opening. Also, alignment marks AM are formed on the solder resist layer 5.
- the cover plating layer 141 electrically connected to the core conductive-layer 22 is formed, and the cover plating layer 141 and the conductive layer 132 are electrically connected through filled vias 142.
- Each of the filled vias 142 has the via hole 144a and the via conductor 144b, which fills the via hole 144a through application by plating.
- the connection terminals T11 to be connected to a motherboard or the like are formed directly on the conductive layer 132 without involvement of vias.
- FIGS. 18 and 19 show processes in manufacturing the wiring substrate 300 according to the third arrangement.
- a method of manufacturing the wiring substrate 300 will next be described with reference to FIGS. 18 and 19 .
- the core substrate process, the filling process, the solder resist layer process, the plating process, and the back end process are similar to those of the method of manufacturing the wiring substrate 100 according to the first arrangement described above with reference to FIGS. 4 and 7 to 11 , and repeated description thereof is omitted.
- Insulating resin films which contain an epoxy resin as a main component and are to become the resin insulation layers 31 and 131 are overlaied on the front and back surfaces, respectively, of the core substrate 2.
- the resultant laminate is subjected to pressure and heat by use of a vacuum thermocompression press, thereby pressure bonding the insulating resin films to the core substrate 2 while the insulating resin films are heat-cured.
- the via holes 44a and 144a are formed in the resin insulation layers 31 and 131, respectively, through laser irradiation by use of a conventionally known laser machining apparatus (see FIG. 18(a) ).
- electroless copper plating is performed, thereby forming electroless copper plating layers on the resin insulation layers 31 and 131, respectively, and on the inner walls of the via holes 44a and 144a.
- photoresist is laminated on the electroless copper plating layers formed respectively on the resin insulation layers 31 and 131, followed by exposure and development to form plating resists MR1 and MR11 in desired patterns.
- copper electroplating is performed, thereby yielding copper platings in desired patterns (see FIG. 18(b) ).
- plating resists MR1 and MR11 are left intact, photoresist is laminated on the electroless copper plating layers formed respectively on the resin insulation layers 31 and 131, followed by exposure and development to form plating resists MR2 and M12 in desired patterns. Subsequently, with the plating resists MR2 and M12 being used as masks, copper electroplating is performed, thereby yielding copper platings in desired patterns (see FIG. 19(a) ).
- the plating resists MR1, MR2, MR11, and MR12 are removed, and then the electroless copper plating layers which underlie the plating resists MR1 and MR2 are removed, thereby forming the conductive layer 34 having the connection terminals T3 and the pads P on the conductive layer 32, and the conductive layer 134 having the connection terminals T11 on the conductive layer 132 (see FIG. 19(b) ).
- the wiring substrate 300 according to the third arrangement is configured such that the connection terminals T3 and T11 are formed directly on the conductive layers 32 and 132, respectively, without involvement of vias.
- the number of processes in manufacturing the wiring substrate 300 can be reduced, thereby lowering manufacturing costs.
- the connection terminals T3 can be disposed at high density within a mounting region for a semiconductor chip.
- Other effects which the wiring substrate 300 yield are similar to those yielded by the wiring substrate 100 according to the first arrangement and the wiring substrate 200 according to the second arrangement.
- FIG. 20 is a plan view (front side) of a wiring substrate 400 according to a fourth arrangement, which is considered as an embodiment of the invention.
- FIG. 21 is a fragmentary, sectional view of the wiring substrate 400 taken along line I-I of FIG. 20 .
- FIG. 22 is a pair of configurational views of the front side of the wiring substrate 400.
- FIG. 22 is a pair of configurational views of connection terminals T4 formed on the front side of the wiring substrate 400.
- FIG. 22(a) is a top view of the connection terminals T4.
- the configuration of the wiring substrate 400 will next be described with reference to FIGS. 20 to 22 ; however, configurational features similar to those described above with reference to FIGS. 1 to 19 are denoted by like reference numerals, and repeated description thereof is omitted.
- a side of the wiring substrate 400 on which a semiconductor chip is connected is referred to as the front side
- a side on which a motherboard, a socket, or the like is connected is referred to as the back side.
- connection terminals T4 of the wiring substrate 400 shown in FIGS. 20 to 22 are used for connection to a semiconductor chip.
- the connection terminals T4 are of a so-called peripheral type and are disposed along the inner periphery of a semiconductor chip mounting region.
- the semiconductor chip is electrically connected to the connection terminals T4, thereby being mounted on the wiring substrate 400.
- the connection terminals T4 are roughened at their surfaces.
- each of the connection terminals T4 have a contact surface T4a in contact with the filling member 4, and a separation surface T4b separated from the filling member 4 in a region located above the contact surface T4a and below the upper surface of the filling member 4. Also, the contact surface T4a and the separation surface T4b are formed circumferentially along all side surfaces of each of the connection terminals T4 excluding a connection side surface connected to the metal wiring 34 (wiring pattern).
- a gap S between the filling member 4 and the separation surface T4b of each of the connection terminals T4 has a depth D5 of 6 ⁇ m or less.
- the gap S between the filling member 4 and the separation surface T4b of each of the connection terminals T4 has a width W of 6 ⁇ m or less. If at least one of the depth D5 and the width W of the gap S is in excess of 6 ⁇ m, the spaces S may fail to be filled with a metal plating layer, solder, underfill, or the like.
- the metal plating layer, solder, underfill, or the like may fail to function as an anchor for the connection terminals; as a result, the connection terminals T4 may fail to have sufficient bonding strength.
- each of the connection terminals T4 has the step L formed at the outer periphery of the first main surface F opposite a contact surface in contact with the resin insulation layer 33 of the build-up layer 3, and the exposed surface of the connection terminal T4 including the step L is covered with the metal plating layer M.
- solder coated on the connection terminals of the semiconductor chip is reflowed, thereby electrically connecting the connection terminals of the semiconductor chip and the corresponding connection terminals T4.
- the metal plating layer M is composed of, for example, a single metal layer or a plurality of metal layers selected from among an Ni layer, an Sn layer, an Ag layer, a Pd layer, an Au layer, etc. (e.g., Ni layer/Au layer or Ni layer/Pd layer/Au layer).
- an anticorrosive OSP Organic Solderability Preservative
- solder may be coated on the exposed surfaces of the connection terminals T4 including the steps L; furthermore, after the exposed surfaces of the connection terminals T4 including the steps L are covered with the metal plating layer M, the metal plating layer M may be coated with solder.
- the filling member 4 may be provided in a filling manner between the connection terminals T4 by any one of the first to fourth filling methods described above in the section of the first arrangement.
- the first filling method for providing the filling member 4 in a filling manner between the connection terminals T4 after the heat-cured insulating resin is ground until it becomes lower in level than the connection terminals T4, the gaps S are formed along the side surfaces of the connection terminals T4 excluding connection side surfaces A connected to the metal wiring 34 (wiring pattern).
- the gaps S are formed along the side surfaces of the connection terminals T4 excluding the connection side surfaces A connected to the metal wiring 34 (wiring pattern). Through formation of the gaps S by these operations, there are formed the contact surfaces T4a in contact with the filling member 4, and the separation surfaces T4b separated from the filling member 4 in a region located above the contact surface T4a and below the upper surface of the filling member 4.
- the second or fourth filling method for providing the filling member 4 in a filling manner between the connection terminals T4 at the time of removal of excess insulating resin, the insulating resin around the side surfaces of the connection terminals T4 are removed in a deeper manner, thereby forming the contact surfaces T4a in contact with the filling member 4, and the separation surfaces T4b separated from the filling member 4 in a region located above the contact surfaces T4a and below the upper surface of the filling member 4.
- attention must be paid so as not to excessively remove the filling member 4 until the surface of the resin insulation layer 33, which is the ground for the filling member 4, is exposed.
- the side surfaces of the front-side connection terminals T4 have the contact surfaces T4a in contact with the filling member 4, and the separation surfaces T4b separated from the filling member 4 in a region located above the contact surfaces T4a and below the upper surface of the filling member 4.
- the metal plating layer M is formed in such a manner as to enter the gaps S between the filling member 4 and the separation surfaces T4b of the connection terminals T4.
- the state shown in FIG. 23 can be prevented; specifically, there can be prevented the state in which the metal plating layer M projects onto the surface of the filling member 4; i.e., the spacing between the metal plating layers formed respectively on the surfaces of the adjacent connection terminals T4 is narrowed. Therefore, in coating solder on the connection terminals T4 or in mounting a semiconductor chip, there can be prevented the occurrence of a short circuit between the connection terminals T4 which could otherwise result from flow of solder toward the adjacent connection terminal T4.
- connection terminals T4 are coated with solder, solder enters the gaps between the filling member 4 and the separation surfaces T4b of the connection terminals T4. Therefore, there can be prevented the occurrence of a short circuit between the connection terminals T4 which could otherwise result from flow of solder coated on the connection terminal T4 toward the adjacent connection terminal T4.
- the above-mentioned metal plating layer M and solder, and underfill used in mounting a semiconductor chip enter the gaps S. Since the metal plating layer M, solder, and underfill which have entered the gaps S function as anchors for the connection terminals T4, sufficient bonding strength can be obtained. This anchoring function can prevent potential separation of the connection terminals T4 in the course of manufacture.
- the contact surface T4a and the separation surface T4b are formed circumferentially along all side surfaces of each of the connection terminals T4 excluding the connection side surface A connected to the wiring pattern.
- the contact surface T4a and the separation surface T4b are formed circumferentially along all side surfaces of each of the connection terminals T4 excluding the connection side surface A connected to the wiring pattern.
- FIG. 24 is a pair of configurational views of connection terminals formed on the front side of a wiring substrate 400A according to modification of the fourth arrangement.
- the configuration of the wiring substrate 400A according to modification of the fourth arrangement will next be described with reference to FIG. 24 ; however, configurational features similar to those of the wiring substrate 400 according to the fourth arrangement described above with reference to FIGS. 20 to 23 are denoted by like reference numerals, and repeated description thereof is omitted.
- the gaps S are formed at the time of forming the filling member 4 in a filling manner; subsequently, the metal plating layer M is formed. Thus, a gap remains between the filling member 4 and the metal plating layer M.
- the metal plating layer M can be formed on the connection terminals T4 in such a manner that no gap is formed between the filling member 4 and the metal plating layer M.
- the gaps S are not formed at the time of forming the filling member 4 in a filling manner, but the gaps are formed between the connection terminals T4 and the side surfaces of the filling member 4 by etching the connection terminals T4.
- the wiring substrate 400A shown in FIG. 24 can be yielded.
- the gaps can be filled with solder.
- connection terminals T4 are not etched, by means of the metal plating layer M being formed on the connection terminals T4 by electroless displacement plating, there can be yielded the wiring substrate 400A in which, as shown in FIG. 24 , no gap is formed between the filling member 4 and the metal plating layer M.
- FIG. 25 is a plan view (front side) of a wiring substrate 500 according to a fifth arrangement.
- FIG. 26 is a fragmentary, sectional view of the wiring substrate 500 taken along line I-I of FIG. 25 .
- FIG. 27 is a pair of configurational views of connection terminals T5 formed on the front side of the wiring substrate 500.
- FIG. 27(a) is a top view of the connection terminals T5.
- FIG. 27(b) is a sectional view taken along line II-II of FIG. 27(a) .
- each of the connection terminals T5 of the wiring substrate 500 according to the fifth arrangement have a contact surface T5a in contact with the filling member 4, and a separation surface T5b separated from the filling member 4 in a region located above the contact surface T5a and below the upper surface of the filling member 4.
- the contact surface T5a and the separation surface T5b are formed circumferentially along all side surfaces of each of the connection terminals T5.
- the gap S between the filling member 4 and the separation surface T5b of each of the connection terminals T5 has a depth D5 of 6 ⁇ m or less.
- the gap S between the filling member 4 and the separation surface T5b of each of the connection terminals T5 has a width W of 6 ⁇ m or less. If at least one of the depth D5 and the width W of the gap S is in excess of 6 ⁇ m, the spaces S may fail to be filled with a metal plating layer, solder, underfill, or the like.
- the metal plating layer, solder, underfill, or the like may fail to function as an anchor for the connection terminals; as a result, the connection terminals T5 may fail to have sufficient bonding strength.
- the metal plating layer M is formed or solder is coated on the connection terminals T4 without formation of the gaps S at the time of forming the filling member 4 in a filling manner.
- FIG. 28 is a plan view (front side) of a wiring substrate 600 according to a sixth arrangement.
- FIG. 29 is a fragmentary, sectional view of the wiring substrate 600 taken along line I-I of FIG. 28 .
- FIG. 30 is a pair of configurational views of connection terminals T6 formed on the front side of the wiring substrate 600.
- FIG. 30(a) is a top view of the connection terminals T6.
- FIG. 30(b) is a sectional view taken along line II-II of FIG. 30(a) .
- each of the connection terminals T6 of the wiring substrate 600 according to the sixth arrangement have a contact surface T6a in contact with the filling member 4, and a separation surface T6b separated from the filling member 4 in a region located above the contact surface T6a and below the upper surface of the filling member 4.
- the contact surface T6a and the separation surface T6b are formed circumferentially along all side surfaces of each of the connection terminals T6.
- the gap S between the filling member 4 and the separation surface T6b of each of the connection terminals T6 has a depth D5 of 6 ⁇ m or less.
- the gap S between the filling member 4 and the separation surface T6b of each of the connection terminals T6 has a width W of 6 ⁇ m or less. If at least one of the depth D5 and the width W of the gap S is in excess of 6 ⁇ m, the spaces S may fail to be filled with a metal plating layer, solder, underfill, or the like.
- the metal plating layer, solder, underfill, or the like may fail to function as an anchor for the connection terminals; as a result, the connection terminals T6 may fail to have sufficient bonding strength.
- wiring substrate 300 Other configurational features are similar to those of the wiring substrate 300 described above with reference to FIGS. 15 to 17 .
- configurational features similar to those of the wiring substrate 300 described above with reference to FIGS. 15 to 17 are denoted by like reference numerals, and repeated description thereof is omitted.
- the wiring substrate 600 yields effects similar to those yielded by the wiring substrate 300 according to the third arrangement and the wiring substrate 400 according to the fourth arrangement.
- the metal plating layer M is formed or solder is coated on the connection terminals T4 without formation of the gaps S at the time of forming the filling member 4 in a filling manner.
- the filling member 4 provided in a filling manner between the connection terminals T1 to T6 has a flat upper surface; however, the upper surface of the filling member 4 is not necessarily flat; for example, even when the filling member 4 has a roundish upper shape, or a so-called fillet shape, as shown in FIG. 31 , similar effects can be yielded.
- the wiring substrates 400 may have pins or lands in place of the solder balls B, for connection to a motherboard or the like, to thereby assume the form of a so-called PGA (Pin Grid Array) substrate or a so-called LGA (Land Grid Array) substrate.
- PGA Peripheral Component Interconnect
- LGA Land Grid Array
- the solder resist layer 5 is formed; however, it may be the case that, after the solder resist layer 5 is formed, the filling member 4 is formed.
- the wiring substrate of the present invention is configured to prevent the occurrence of a short circuit between the connection terminals and to implement a fine-pitch disposition of the connection terminals.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Manufacturing Of Printed Wiring (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011161877 | 2011-07-25 | ||
JP2012001282 | 2012-01-06 | ||
PCT/JP2012/003201 WO2013014838A1 (ja) | 2011-07-25 | 2012-05-16 | 配線基板 |
Publications (3)
Publication Number | Publication Date |
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EP2632237A1 EP2632237A1 (en) | 2013-08-28 |
EP2632237A4 EP2632237A4 (en) | 2015-03-18 |
EP2632237B1 true EP2632237B1 (en) | 2019-07-10 |
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Family Applications (1)
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EP12817081.8A Active EP2632237B1 (en) | 2011-07-25 | 2012-05-16 | Wiring substrate |
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US (1) | US9485853B2 (zh) |
EP (1) | EP2632237B1 (zh) |
JP (1) | JP5415632B2 (zh) |
KR (1) | KR101296996B1 (zh) |
CN (1) | CN103229605B (zh) |
TW (1) | TWI473543B (zh) |
WO (1) | WO2013014838A1 (zh) |
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JP2013074178A (ja) * | 2011-09-28 | 2013-04-22 | Ngk Spark Plug Co Ltd | 部品内蔵配線基板の製造方法 |
US9721878B2 (en) * | 2012-09-28 | 2017-08-01 | Intel Corporation | High density second level interconnection for bumpless build up layer (BBUL) packaging technology |
US10433421B2 (en) * | 2012-12-26 | 2019-10-01 | Intel Corporation | Reduced capacitance land pad |
TWI514530B (zh) * | 2013-08-28 | 2015-12-21 | Via Tech Inc | 線路基板、半導體封裝結構及線路基板製程 |
JP6092752B2 (ja) * | 2013-10-30 | 2017-03-08 | 京セラ株式会社 | 配線基板 |
JP6051143B2 (ja) * | 2013-10-30 | 2016-12-27 | 京セラ株式会社 | 配線基板 |
JP5846185B2 (ja) | 2013-11-21 | 2016-01-20 | 大日本印刷株式会社 | 貫通電極基板及び貫通電極基板を用いた半導体装置 |
JP6185880B2 (ja) * | 2014-05-13 | 2017-08-23 | 日本特殊陶業株式会社 | 配線基板の製造方法及び配線基板 |
JP2015231003A (ja) * | 2014-06-06 | 2015-12-21 | イビデン株式会社 | 回路基板および回路基板の製造方法 |
JP6230971B2 (ja) * | 2014-08-05 | 2017-11-15 | 日本特殊陶業株式会社 | 配線基板の製造方法 |
TWI556383B (zh) * | 2014-08-29 | 2016-11-01 | 矽品精密工業股份有限公司 | 封裝結構及其製法 |
JP6235682B2 (ja) * | 2016-11-09 | 2017-11-22 | 京セラ株式会社 | 配線基板の製造方法 |
JP2018198275A (ja) * | 2017-05-24 | 2018-12-13 | イビデン株式会社 | コイル内蔵基板及びその製造方法 |
KR20190012485A (ko) * | 2017-07-27 | 2019-02-11 | 삼성전기주식회사 | 인쇄회로기판 및 그 제조 방법 |
US20210035818A1 (en) * | 2019-07-30 | 2021-02-04 | Intel Corporation | Sacrificial pads to prevent galvanic corrosion of fli bumps in emib packages |
US11545425B2 (en) * | 2020-10-08 | 2023-01-03 | Qualcomm Incorporated | Substrate comprising interconnects embedded in a solder resist layer |
CN112867243A (zh) * | 2021-01-06 | 2021-05-28 | 英韧科技(上海)有限公司 | 多层电路板 |
US11823983B2 (en) | 2021-03-23 | 2023-11-21 | Qualcomm Incorporated | Package with a substrate comprising pad-on-pad interconnects |
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JP3346263B2 (ja) | 1997-04-11 | 2002-11-18 | イビデン株式会社 | プリント配線板及びその製造方法 |
MY139405A (en) * | 1998-09-28 | 2009-09-30 | Ibiden Co Ltd | Printed circuit board and method for its production |
JP2002353593A (ja) * | 2001-05-25 | 2002-12-06 | Toppan Printing Co Ltd | プリント配線板およびその製造方法 |
JP2003249840A (ja) * | 2001-12-18 | 2003-09-05 | Murata Mfg Co Ltd | 弾性表面波装置 |
JP2003209366A (ja) * | 2002-01-15 | 2003-07-25 | Sony Corp | フレキシブル多層配線基板およびその製造方法 |
JP2003332720A (ja) | 2002-05-14 | 2003-11-21 | Cmk Corp | 多層プリント配線板とその製造方法 |
TWI231028B (en) | 2004-05-21 | 2005-04-11 | Via Tech Inc | A substrate used for fine-pitch semiconductor package and a method of the same |
JP2006344889A (ja) | 2005-06-10 | 2006-12-21 | Nec Saitama Ltd | 大型電子部品の実装方法 |
TWI288590B (en) | 2005-10-31 | 2007-10-11 | Unimicron Technology Corp | Method of forming solder mask and circuit board with solder mask |
JP2007149998A (ja) | 2005-11-29 | 2007-06-14 | Senju Metal Ind Co Ltd | フラットパッケージ型電子部品搭載用プリント基板およびその製造方法 |
JP2008140886A (ja) | 2006-11-30 | 2008-06-19 | Shinko Electric Ind Co Ltd | 配線基板及びその製造方法 |
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JP5573429B2 (ja) * | 2009-08-10 | 2014-08-20 | 住友ベークライト株式会社 | 無電解ニッケル−パラジウム−金めっき方法、めっき処理物、プリント配線板、インターポーザ、および半導体装置 |
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US8528200B2 (en) * | 2009-12-18 | 2013-09-10 | Ibiden Co., Ltd. | Printed wiring board and method for manufacturing printed wiring board |
US8884432B2 (en) * | 2011-06-08 | 2014-11-11 | Tessera, Inc. | Substrate and assembly thereof with dielectric removal for increased post height |
-
2012
- 2012-05-16 US US13/885,928 patent/US9485853B2/en active Active
- 2012-05-16 JP JP2012554547A patent/JP5415632B2/ja active Active
- 2012-05-16 EP EP12817081.8A patent/EP2632237B1/en active Active
- 2012-05-16 WO PCT/JP2012/003201 patent/WO2013014838A1/ja active Application Filing
- 2012-05-16 CN CN201280003901.5A patent/CN103229605B/zh not_active Expired - Fee Related
- 2012-05-16 KR KR1020137012468A patent/KR101296996B1/ko active IP Right Grant
- 2012-07-24 TW TW101126537A patent/TWI473543B/zh not_active IP Right Cessation
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JPWO2013014838A1 (ja) | 2015-02-23 |
US20140124242A1 (en) | 2014-05-08 |
EP2632237A1 (en) | 2013-08-28 |
TWI473543B (zh) | 2015-02-11 |
JP5415632B2 (ja) | 2014-02-12 |
CN103229605A (zh) | 2013-07-31 |
US9485853B2 (en) | 2016-11-01 |
KR20130063549A (ko) | 2013-06-14 |
CN103229605B (zh) | 2016-06-08 |
EP2632237A4 (en) | 2015-03-18 |
WO2013014838A1 (ja) | 2013-01-31 |
KR101296996B1 (ko) | 2013-08-14 |
TW201316851A (zh) | 2013-04-16 |
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